Hi there, try to set the Tone knob in the preset Jacek gave you down to 1, that's the most neutral parameters' configuration for Redoptor. It won't be identical to DRY signal, because it passes through the hipass filter, which despite it's set to 0hz, it has a subtle slope which covers lower audible frequencies.

Just like with the Low-pass filter in Redoptor, where you can disable it completely, we want to do similarly with Hi-pass filter and add a two-state button where you can decide whether the Hi-pass should be enabled or not, thus preventing against cutting lows out. This is on our ToDo list already.

I guess it's doable but after we replace the preset management system in SilverLine collection, and make it more similar to the one you can find in LuSH-101, which is based on files rather than on 128 memory slots.